Aiming telescope constructed as alpha breech sight



July 22, 1930.

yl. PECHAN AIMING TELES'COPECONSTRUCTED As A BREECH SIGHT Filed April26, 1928 Patented July 2z, V1930 IGNAZ PECHAN, oryviiimm,AUsTnrAQA's'sIGivOR To cz'EcHosLovAir Ycoiiirnirirfcfr'.i

GoEiizoPTiscHE ANSTALT Axririin'iiisEL,Lsciaii-r'rA 3A i GoEiazor'ricxYlUs'rAv, or .ismi'iisiiiivi'i,l cziiciiosLovAx1A;,

Applicationaieaaprii'2e; iez'sjseriai No. avaisnanjdinsceriaiiyfiuayisgieafzf J Y The recoil ofthe firearm niay easily exertan unfavorable influence `onthe accuracy vof the aiiiiing device if thesaine is not of asilificiently robust' construction. ThisV heavy 5construction, lioweverfresults on recoil iiisor creased forces due toinertia, vWhich have/forA their consequence not onlyanL increase ofv the'strainsfexerted on the material, but also ay icdiiction'oi the`accuracy of adjustment. These drawbacks may beobviated according to theinventionby mounting, for reduci iiigtheinasses"subjectto the recoil,the ainiing' telescope V'together "With the optical ele`` nientsprovided 'in front of they sarne :and inf common With all the structuralelements re-` quired for the adjustment for the firingl'and groundangles andthe sideangle organically'- connected in Onecasing. f

A constructional forinof the/subject in atf ter off the applicationisshowiiby Wayv of; `example `asfa 4machine aiming device, Figi being asectional front elevation and` Fig. 2 a sectional sideelevation.V

of the hollow cylindrical spindle 2 provided on its periphery with aWorin teething into` journalled vin the,

Which engages a Worrrr vbottoni part of the casing 4.

in turn niounted in the' holloviT spindle to rotate around this axis, sothat any desiredincliiiationrnaybe imparted to theeye piece tubewith theaxis a", lrperpendicular to the Vobjective axis. In the angulartelescope i 6 there .is arranged b esidesthe eyepiece 7v and theaiinline plate 8 the single reflecting prism 9 and finally the objective l0.In front of the 'objective 10 there is secured in the casing 41 byineans of the yoke l1 the single j reiiecting prism l2 Vreflecting theaxis O,

0, iiitovthe line Y,.Y perpendicular thereto.-

In the casing 4 is journalled the head 5 to A `rotate around the saidaxis y, li/such head containing the entering reflector 14 rotatable inthe vertical plane. Thelateral adjustment `of the aiming line is c ectedin the Well Y groove .A The bed plate I inounted in. a dove tailedgroovcof the machine gun'jbody forinslpart-'` Thiscasing is intuijnjoui-nailed on "thet outer. peripheryl of the hollowcylindrical spindle2' concentric tothe objectivey axisfQ,` O ofl thefangular-telescope6,which latter is o suiebieieaic ai the erige-6ta s j androtatingdfthehandleddise 17 di,

liiovvngiriaiiiler'by turning the ivorrrrl Ienfr gagingf into a suitableiroiinLwheel on the ieector head 5. tFor 1the "purposefofrecti- Vfyiiigthe iiriage requiredin'each lateral adjustnient of the `aimingflinef'and in each ver"` The adj ustni'entof the aini line in accordanceVvvith the ground and i'ifngfangle inay con# handlediscwcarries on`eitheriside? llockingl locking teeth` are held in engage teethiaanahsfdivisi-Qn griitst i pulling ,outwards 'h height .ofthe-5,1"ock`- reinar ath-es angle .alflmyibediiiStsi The bbjearve 11o. mylar@ bexciovii. sroLEcNosmr K; 11. f

Y.. .i .H u ,55' tical turning of the ,eye .pieceA axisareversthebevelfwheel .teethl 6? ofA the' objective tube.

Y eye piece part of a telescope, a reflecting rectangular isoscelesprism interposed between the said two parts of thetelescope, one ofthesmall sides o 1`vsuch prismfb'eino' permanently perpendicular to theoptical 'axisof'theleg Y of the light entering Apartl of the .llft scopenext to such reflecting prism, 'and the other Small .SidS OflheSaid@Heating pISSm searing ne of its .leg y nex i Of-ifSlsa beingpermanently perpendicular to the optal asis 0iiejles 0f. the SYS; PiecePer@ Si thesaid tele/scope, .next tothe 'said-reflectingE PriSril)inw-1S f renting the. light entering par# ef. th telescope amend,thejeptisal aXiS efijlS les th flesCOp @rounder-he optical axis.' .ofits leg next ,te the vSaid reflecting pr'sm- 21 A11' aiming: telesep...SQIiSltutng fa? breach, ,Sieht for@ fir@ afm Companies-+111 angular.light entering Part. and-tn angular.

er@ Piece Part of a telescope, a reflecting liewIig-ular iSQSCSleS prismintefpOSSd bStWSen the. .Said imparts 'off lhetlSSGQp, 011.@ f the'Small Sides of Slm-h `pli-ismbeing permanentlypieljnendcullar to. theOpfifl eXlS.- @if the leg @maren 'menig pali-laf ae :Sadam- Scene'Delitto; such ifeltmarrSm andthe-- other Small Side @i the ,Said'reflecting VvPriSm being permanently perpendicular to the op,-

ltl aXiSlQfjthelieg @fthe eye piece Part Oil'.

aieaidelesop to. aaien renewing PlilSlir-'meaIAS-ffe relating the lightentering Such ineiisoriip 1 lng aGaSiJJg 5a. tube, con: and' ly.mounted.' in Seth @Silas-1a were Whse.

saidiiib'e, and a worm' mounted inthe said casino,r

ofthe leg'next to. the .Sfiflating prism-iA11."aiming."tlsore-".QiiStltlitg af .bleecnzsight fer. wir@ 'arm@reprieve an;

nl.. die 'Said le l t'h pii'Sm, mansion' @aan part' of' the tele'sscope`a .Xt t0 the Said 're'fletiee Prise 'andmeaiiS fol; rotating th @yaPiece Part 0f meente/d @titheY and engaging'- ntqfthe. SadwOrmi wheeljand, mea@ for .IQfiktillg the eye Yniece part of, the telescope aroundthe optical axis' means for rotating the eye piece part of the telescopearound the optical axis of its leg next to the said reflecting prism,such means comprising a hollow spindle fixed to the fire arm, .a bearinglocated in such hollow spindle for the leg portion of' theeye piece partof the said telescope next to the said reflecting prism, a worm wheelsegment on such hollow spindle, 'a worm engaging'such worm Vwheelsegment,- and-mea'ns'ifor' Yrotating such worm.

. 4. An 'ai-mingu-`V telescope constituting a breechsight for as firearm comprising an angular light entering part'and an angular eye piecepart of a telescope, av reflecting rectangular isosceles prisminterposed between thesaid two parts ofthe telescope l,one ofthe smalllsides of'fs'ufch prism bei-ng permanently. perpendicular to the opticalaxis of the leg ,f the. light entering partof the said telescope next tosuch reflectinghprism and the other small side of the 4 said reflectingprism being permanently perpendicular Lto4 the optical "axis of the legof the eye piece part of. thesaid telescope lnext to the said reflectingprism, means for v rotat` ing. the f lightl entering partof theltelescope around the optical axisv of'its leg next to the saidreflecting prism, such means comprising a, casing, a tubefconstituting'the said leg and. rotatably mounted Ain. such casing, a' worml wheelmounted onthesaidlube fand a worml mounted in the, said casing andengaginglinto thesaid worm wheel andmeans for-rotating the eyePieCvQpalt of the' telescope around the' opticalaxis of'its-le'gnex'ttothe/said reflectingprism, jsuch means comprising "a hollowsp'ilndlellixed tothe firearm, a fbearing located in suchV hollowspindle for thelegportionl of the eye part ofthesaidtelescope next'totlie vsaidireflecting prism, worm wheel segment QUSuChhollowispin'dle, aworm engging sufchworm 'wheel segment, such worm beingjournallcdin .the- Said casing, and two independent means for rotatingsuchworm whereby two independent adjustments `are imparted to the Vsaidworm segment.` 'i

In tSSf'mOnywhQfSOf Ihaveaxdmy Signatllr'e. I Y n l Y y p

